boynton



N. A. BOYNTON.

Base Burning Stove.

No. 58,582. Patented Oct. 9, 1866;-

FIG. 3.

W r/vssssss UNITED STATES PATENT OFFICE.

NATHL. A. BOYNTON,

OF NEW YORK, N. Y.

BASE-BURNING STOVES.

Specification forming part of Letters Patent No. 58,582, dated October 9, 1866.

To all whom it may concern:

Be it known that I, NATHANIEL A. BOYN- TON, of the city of New York and State of New York, have invented a new and useful Improvement in Stoves and Furnaces, of which the following is a true description.

My improvementbelongs to that class of stoves and furnaces wherein the coal, in an interior reservoir, descends to keep a proper quantity upon the grate.

In Dennis G. Littlefields patent for an im' provement in stoves, dated January 24, 1854, and the subsequent reissues thereof, there is described an exterior and interior cylinder, the latter, which is the reservoir of coal, having a cover, above and between which and the exterior cylinder the products of combustion circulate on their way to the exit flue-an arrangement relied on to prevent the gases generated in the reservoir from escaping upward, obliging them to pass downward through or in contact with the burning coal 011 the grate.

The closed reservoir is a distinguishing feature of Littlefields patent.

Now, while I use a fuel-reservoir within the exterior cylinder, I find that by placing the exit-flue below the upper edge of the reservoir, the reservoir may be left open at top without the coal within it being ignited, thus dispensing with the reservoir-cover alt-ogether.

In my invention the reservoir is in free communication at top with the space between it and the exterior cylinder. In Lit-tletields such communication is cut off by the cover of the reservoir. Thus my invention is more simple than his, one cover being dispensed with. Again, it is more economical, because simpler. Again, there is less trouble in feeding the stove with coal, particularly when this is done from the side, there being but one cover to remove and replace. And, again, there is no danger of the gases generated in the reservoir exploding when coming in contact with the outer air on the removal of the cover to feed fresh coal, my reservoir having no cover to be removed, and being at all times in free communication with the combustion-chamber between the exterior and interior cylinders.

There are yet other differences between my invention and Littlefields. His specification and drawings represent a reservoir of equal diameter throughout, if not wider at bottom than at top, while my reservoir is wider at top than at bottom, though not enough so to prevent the free descent of the supply of coal.

The drawings represent a prolongation downward of the fuel-reservoir by an iron ring, supported by a lip on the lower edge of the reservoir and a corresponding lip on the upper edge of the ring, the ring being removable, when burnt out, without interfering with the construction of the stove, and a new ring substituted.

This is independent of my invention, and the fuel-reservoir may be prolonged downward as far as shown by the bottom of the ring in the drawings, omitting the supporting-lip.

In the accompanying drawings, A represents the reservoir; a, the lower and removable portion, suspended by a flange projectin g outward on a flange projecting inward on the lower edge of the fixed portion of the reservoir; B, the outer ease or cylinder; 0,

the cover, through which the fuel is fed, (shown at top in the drawings,) but which may be on the side of the exterior cylinder, near the top of the reservoir; D D D, the lugs by which the reservoir is suspended within the exterior cylinder; E, the exit-flue; F, the fire-pot; Gr, the grate; H, the ash-box; I, an opening into a diving flue, K, when it isdesired, by turning the valve L, to make the heat pass around the base of the stove, i11- creasing thereby the heating-surface.

The course of the currents of air is indicated by the arrows, those on the right showing the direction to the upper, and those on the left to the lower, opening on their way out.

WVhat I claim as new, and desire to secure by Letters Patent in the above, is

The combination of an outer case or exterior cylinder with an interior cylinder or case, which is a reservoir of fuel, above the firepot, the space between the outer case and the reservoir forming a combustion-chamber, with which the reservoir is in free communication at its upper portion.

NATHL. A. BOYNTON.

Witnesses:

G. L. G. BUSHNELL, I. B. WALKER. 

